/*
 * Copyright 2008-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.broadleafcommerce.core.offer.service.discount;

import java.util.Comparator;

import org.broadleafcommerce.core.offer.service.discount.domain.PromotableCandidateItemOffer;

/**
 * 
 * @author jfischer
 *
 */
public class ItemOfferComparator implements Comparator<PromotableCandidateItemOffer> {
	
	public static ItemOfferComparator INSTANCE = new ItemOfferComparator();

	public int compare(PromotableCandidateItemOffer p1, PromotableCandidateItemOffer p2) {
		
		Integer priority1 = p1.getPriority();
		Integer priority2 = p2.getPriority();
		
		int result = priority1.compareTo(priority2);
		
		if (result == 0) {
			// highest potential savings wins
			return p2.getPotentialSavings().compareTo(p1.getPotentialSavings());
		} else {
			return result;
		}
	}

}
